CN107607363B - Sampling device and sampling method - Google Patents
Sampling device and sampling method Download PDFInfo
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- CN107607363B CN107607363B CN201610551587.4A CN201610551587A CN107607363B CN 107607363 B CN107607363 B CN 107607363B CN 201610551587 A CN201610551587 A CN 201610551587A CN 107607363 B CN107607363 B CN 107607363B
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- 238000005070 sampling Methods 0.000 title claims abstract description 128
- 238000000034 method Methods 0.000 title claims abstract description 41
- 230000001681 protective effect Effects 0.000 claims abstract description 53
- 239000007789 gas Substances 0.000 claims description 83
- 238000012806 monitoring device Methods 0.000 claims description 25
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 claims description 20
- 230000008569 process Effects 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 9
- 238000012544 monitoring process Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 239000011261 inert gas Substances 0.000 claims description 6
- AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Chemical compound O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 5
- 229910052786 argon Inorganic materials 0.000 claims description 3
- UBAZGMLMVVQSCD-UHFFFAOYSA-N carbon dioxide;molecular oxygen Chemical compound O=O.O=C=O UBAZGMLMVVQSCD-UHFFFAOYSA-N 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 229910052743 krypton Inorganic materials 0.000 claims description 3
- DNNSSWSSYDEUBZ-UHFFFAOYSA-N krypton atom Chemical compound [Kr] DNNSSWSSYDEUBZ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 229910052704 radon Inorganic materials 0.000 claims description 3
- SYUHGPGVQRZVTB-UHFFFAOYSA-N radon atom Chemical compound [Rn] SYUHGPGVQRZVTB-UHFFFAOYSA-N 0.000 claims description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 3
- 230000003670 easy-to-clean Effects 0.000 abstract description 11
- 238000003860 storage Methods 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 11
- 239000006227 byproduct Substances 0.000 description 10
- 238000005273 aeration Methods 0.000 description 8
- 239000000126 substance Substances 0.000 description 8
- 230000009471 action Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000000605 extraction Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
A sampling device and a sampling method are provided, wherein the sampling device comprises: the first drainage tube is provided with a first port, a second port and an intermediate port positioned between the first port and the second port, and the first port is suitable for introducing a sample to be extracted; the second drainage tube is provided with a third port and a fourth port, the third port is communicated with the middle port, and the collecting device is connected with the fourth port; and the protective gas device is connected with the second port and is suitable for introducing protective gas into the second port. The sampling device is easy to clean after operation.
Description
Technical Field
The invention relates to the field of production of chemical materials, in particular to a sampling device and a sampling method.
Background
In the production process of some chemical materials which are easy to react with air violently, in order to analyze each procedure production process and control process parameters, the chemical materials in the production process need to be sampled.
For example, in the production of titanium tetrachloride, it is necessary to sample the titanium tetrachloride.
Currently, titanium tetrachloride sampling devices are integrated with devices for producing titanium tetrachloride. The titanium tetrachloride sampling device comprises a drainage tube, a sampling valve and a sampling plug port. During sampling, titanium tetrachloride in the production process flows through the drainage tube, the sampling valve and the sampling plug port, and the titanium tetrachloride is extracted from the sampling plug port by the needle tube.
However, the prior art sampling device is not easy to clean after the sampling is finished.
Disclosure of Invention
The invention provides a sampling device and a sampling method, which aims to enable the sampling device to be easy to clean.
To solve the above problems, the present invention provides a sampling device, comprising: the first drainage tube is provided with a first port, a second port and an intermediate port positioned between the first port and the second port, and the first port is suitable for introducing a sample to be extracted; a second draft tube having a third port and a fourth port, the third port being in communication with the intermediate port; the collecting device is connected with the fourth port; and the protective gas device is connected with the second port and is suitable for introducing protective gas into the second port.
Optionally, the protective gas is argon, nitrogen, oxygen, carbon dioxide, krypton or radon.
Optionally, the method further includes: and the air exhaust device is connected with the second port.
Optionally, the air extracting device is an air extracting pump, an air extracting cylinder or a negative pressure drainage ball.
Optionally, the method further includes: the first valve is arranged between the second port and the air exhaust device.
Optionally, the method further includes: the first monitoring device is connected with the first drainage tube and located between the second port and the middle port, and the first monitoring device is suitable for monitoring the position of a sample to be extracted in the first drainage tube in the sampling process.
Optionally, the first monitoring device is a first liquid level meter or a first pressure meter.
Optionally, the second draft tube is vertically disposed with respect to the first draft tube.
Optionally, the collecting device is a vacuum tank, a sealed tank filled with inert gas, or an open tank filled with inert gas having a density greater than air.
Optionally, the method further includes: and the second valve is arranged between the second port and the protective gas device.
Optionally, the method further includes: a third valve disposed between the intermediate port and the first port; and the fourth valve is arranged between the second port and the middle port.
Optionally, the first drain tube further has an additional port located between the second port and the intermediate port; the sampling device further comprises: and one port of the third drainage tube is communicated with the first drainage tube through an additional port, and the other port of the third drainage tube is communicated with the fourth port.
Optionally, the method further includes: a fifth valve disposed between the additional port and the intermediate port; and the sixth valve is arranged between two ports of the third drainage tube.
Optionally, the number of the third draft tubes is one or more.
Optionally, the method further includes: and the second monitoring device is connected with the third drainage tube, is positioned between two ports of the third drainage tube, and is suitable for monitoring the position of the sample to be extracted in the third drainage tube in the sampling process.
Optionally, the second monitoring device is a second liquid level meter or a second pressure meter.
Optionally, the method further includes: and the seventh valve is arranged between the fourth port and the collecting device.
Optionally, the material of the sample to be extracted is titanium tetrachloride, concentrated sulfuric acid, or sulfur trioxide.
The invention also provides a sampling method by adopting the sampling device, which comprises the following steps: carrying out first inflation by adopting a protective gas device to fill protective gas in the first drainage tube and the second drainage tube; after the first inflation, introducing a sample to be extracted from the first port, and enabling the sample to be extracted to flow along the first drainage tube and the second drainage tube; collecting the sample to be extracted flowing out of the second drainage tube at the fourth port by using a collecting device; and after the sample to be extracted is collected, carrying out second inflation by adopting a protective gas device, and discharging the residual sample to be extracted in the first drainage tube and the second drainage tube.
Compared with the prior art, the technical scheme of the invention has the following advantages:
the sampling device provided by the invention comprises a protective gas device, wherein the protective gas device is suitable for introducing protective gas into the second port. The protective gas device can fill protective gas into the first drainage tube and the second drainage tube, and the residual samples to be extracted in the first drainage tube and the second drainage tube are discharged in the sampling process. Avoid remaining more in first drainage tube and second drainage tube to wait to draw the sample for sampling device easily clears up. Simultaneously, avoid in the in-process of clearance sampling device, remaining in first drainage tube and the second drainage tube treat that the sample is arranged to external environment in drawing. Thereby avoiding polluting the environment.
Secondly, the protective gas device can be full of protective gas for first drainage tube and second drainage tube to discharge the air in first drainage tube and the second drainage tube, avoid waiting to extract the sample and contact with the moisture in the air and take place the reaction in the sampling process to avoid remaining the accessory substance in the pipe wall of first drainage tube and second drainage tube. Thereby making the sampling device easy to clean.
Again, the sampling device is independent of the device producing the sample to be extracted, and can be assembled and disassembled separately. So that the early preparation of the sampling is simple.
According to the sampling method provided by the invention, before the sample to be extracted is introduced into the first port, the protective gas device is adopted for carrying out first inflation, so that the first drainage tube and the second drainage tube are filled with the protective gas, and the sample to be extracted introduced from the first port is prevented from contacting with air. The reaction of the sample to be extracted introduced from the first port and the moisture in the air is avoided to generate byproducts, and the byproducts are prevented from remaining in the pipe walls of the first drainage pipe and the second drainage pipe. After the samples to be extracted are collected, the protective gas device is adopted for second inflation, so that the residual samples to be extracted in the first drainage tube and the second drainage tube are discharged, and more residual samples to be extracted in the first drainage tube and the second drainage tube are avoided. So that the sampling device is easy to clean after the sample to be extracted is collected.
Drawings
FIG. 1 is a schematic diagram of a sampling device;
FIG. 2 is a schematic structural diagram of a sampling device according to an embodiment of the present invention;
FIG. 3 is a flow chart of a sampling method according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a sampling device according to another embodiment of the present invention;
FIG. 5 is a flow chart of a sampling method according to another embodiment of the present invention.
Detailed Description
As mentioned in the background, prior art sampling devices are difficult to clean.
Fig. 1 is a sampling device, comprising: a drainage tube 10; a first valve F1 and a second valve F2 located between the two ports of the draft tube 10; a sampling plug M located in the draft tube 10 between the first valve F2 and the second valve F3.
The cuvette 20 is part of a device for generating chemical samples, the cuvette 20 having a P1 port and a P2 port; the test tube 20 is provided with a third valve F3. Two ports of the drainage tube 10 are respectively communicated with two ports of the test tube 20. A third valve F3 is disposed between the two ports of tube 20. The test tube 20 and the sampling device are integrally formed. The chemical sample is titanium tetrachloride.
In the production of titanium tetrachloride, titanium tetrachloride was introduced through a P1 port and flowed out of a P2 port through a third valve F3. When sampling is desired, the first valve F2 and the second valve F3 are opened and then the third valve F3 is closed, and titanium tetrachloride flows through the draft tube 10. And opening the sampling plug opening M, and extracting titanium tetrachloride at the sampling plug opening M by using a needle tube.
However, after the sampling device finishes sampling, the sampling device is not easy to clean, and the research finds that the reason is that:
before the titanium tetrachloride is extracted, the sampling plug M is opened, part of the titanium tetrachloride is exposed in the air and reacts with moisture in the air, and the formed by-products are attached to the inner wall of the draft tube 10 near the sampling plug M. In the process of extracting titanium tetrachloride by using the needle tube, because air is remained in the needle head of the needle tube, the titanium tetrachloride is easy to react with moisture in the air remained in the needle tube, and the formed by-product is attached to the inside of the needle head. In addition, when the sampling was completed, a large amount of titanium tetrachloride remained in the draft tube.
In conclusion, the difficulty of cleaning the sampling device is increased after the sampling is finished.
On this basis, the invention provides a sampling device, comprising: the first drainage tube is provided with a first port, a second port and an intermediate port positioned between the first port and the second port, and the first port is suitable for introducing a sample to be extracted; a second draft tube having a third port and a fourth port, the third port being in communication with the intermediate port; the collecting device is connected with the fourth port; and the protective gas device is connected with the second port and is suitable for introducing protective gas into the second port.
The protective gas device is suitable for introducing protective gas into the second port. On the one hand, the protective gas device can fill protective gas into the first drainage tube and the second drainage tube, and the residual sample to be extracted in the first drainage tube and the second drainage tube is discharged in the sampling process. Avoid remaining more in first drainage tube and second drainage tube and wait to draw the sample. On the other hand, the protective gas device can fill the first drainage tube and the second drainage tube with protective gas, so that air in the first drainage tube and the second drainage tube is discharged, a sample to be extracted is prevented from being in contact with moisture in the air to react in the sampling process, and by-products are prevented from remaining in the tube walls of the first drainage tube and the second drainage tube. Thereby making the sampling device easy to clean.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Fig. 2 is a schematic structural diagram of a sampling device according to an embodiment of the present invention.
The sampling device comprises: a first draft tube M1, the first draft tube M1 having a first port a and a second port B, the first port a being adapted to pass a sample to be extracted, and an intermediate port located between the first port a and the second port B; a second draft tube M2, the second draft tube M2 having a third port and a fourth port, the third port in communication with the intermediate port; a collecting device 100, the collecting device 100 being connected to the fourth port; and the protective gas device 110 is connected with the second port B, and the protective gas device 110 is suitable for introducing protective gas into the second port B.
The sample to be extracted may be a chemical substance that is susceptible to reaction with water in the air, such as titanium tetrachloride, concentrated sulfuric acid, or sulfur trioxide. The sample to be extracted may also be other chemicals.
In this embodiment, the second draft tube M2 is vertically arranged with respect to the first draft tube M1. In other embodiments, the second draft tube may be at an angle relative to the first draft tube.
The shielding gas device 110 stores shielding gas therein.
The protective gas is argon, nitrogen, oxygen, carbon dioxide, krypton or radon.
The shielding gas device 110 is adapted to introduce shielding gas into the second port B. In one aspect, the shielding gas device 110 can fill the first draft tube M1 and the second draft tube M2 with shielding gas, and discharge the sample to be extracted remaining in the first draft tube and the second draft tube during sampling. The remaining of the sample to be taken in the first draft tube M1 and the second draft tube M2 is avoided to make the sampling device easy to clean. Meanwhile, the residual sample to be extracted in the first draft tube M1 and the second draft tube M2 is prevented from being discharged to the external environment in the process of cleaning the sampling device. Thereby avoiding polluting the environment.
On the other hand, the shielding gas means 110 is capable of filling the first draft tube M1 and the second draft tube M2 with the shielding gas to exhaust the air in the first draft tube M1 and the second draft tube M2, thereby preventing the sample to be extracted from reacting by contacting with the moisture in the air in the first draft tube M1 and the second draft tube M2 during the sampling process, and thus preventing the by-products from remaining in the tube walls of the first draft tube M1 and the second draft tube M2. Thereby making the sampling device easy to clean.
The sampling device further comprises: an air extractor 120, the air extractor 120 being connected to the second port B.
The suction device 120 is adapted to reduce the pressure in the first and second draft tubes M1 and M2.
The air extracting device 120 is an air extracting pump, an air extracting cylinder or a negative pressure drainage ball.
When the sample to be extracted is introduced into the first port a during the process of producing the sample to be extracted, the sample to be extracted also flows along the inner walls of the first and second draft tubes M1 and M2 due to the fluidity of the sample to be extracted itself during the production process without the action of the air exhaust device 120.
In the case where the first port a is connected to a storage device in which a sample to be extracted is stored, it is necessary to reduce the air pressure in the first drain tube M1 by the suction device 120 so that the sample to be extracted flows in the direction from the first port a to the second port B along the first drain tube M1. Meanwhile, when the liquid level of the sample to be extracted reaches the middle port, the sample to be extracted flows through the second drain tube M2 to reach the fourth port.
The sampling device further comprises: a first valve F11 is disposed between the second port B and the gas evacuation device 120. Opening the first valve F11 and communicating the gas-withdrawal device 120 with the second port B; the first valve F11 is closed and the suction device 120 is blocked from the second port B.
The sampling device further comprises: and a second valve F12 disposed between the second port B and the shielding gas unit 110. Opening the second valve F12 and communicating the shielding gas device 110 with the second port B; the second valve F12 is closed and the shielding gas device 110 is blocked from the second port B.
The sampling device further comprises: a third valve F13 disposed between the intermediate port and the first port a; and a fourth valve F14 disposed between the second port B and the intermediate port.
The sampling device further comprises: a first monitoring device 130, the first monitoring device 130 being connected to the first drain tube M1, the first monitoring device 130 being located between the second port B and the intermediate port, said first monitoring device 130 being adapted to monitor the position of the sample to be extracted in the first drain tube M1 during sampling.
The first monitoring device 130 is a first liquid level meter or a first pressure meter.
The collection device 100 is adapted to collect the sample to be extracted flowing from the fourth port.
In this embodiment, the collecting device 100 is a vacuum tank, and the sample to be extracted flowing out from the fourth port is sucked into the vacuum tank by the internal and external pressure difference of the vacuum tank. In other embodiments, the collection device is a sealed tank containing an inert gas. The collection means may be an open tank containing an inert gas having a density greater than air. The collection device may also be a sealed canister containing dry air.
The sampling device further comprises: and a seventh valve F17 disposed between the fourth port and the collection device 100. The seventh valve F17 is adapted to control how much of the sample to be extracted is collected in the collection device 100.
In this embodiment, the sampling device is independent of the device producing the sample to be extracted, and can be assembled and disassembled independently. So that the early preparation of the sampling is simple.
Accordingly, the present invention further provides a method for sampling by using the above sampling device, please refer to fig. 3, which includes the following steps:
s01: carrying out first inflation by adopting a protective gas device to fill protective gas in the first drainage tube and the second drainage tube;
s02: after the first inflation, introducing a sample to be extracted from the first port, and enabling the sample to be extracted to flow along the first drainage tube and the second drainage tube;
s03: collecting the sample to be extracted flowing out of the second drainage tube at the fourth port by using a collecting device;
s04: and after the sample to be extracted is collected, carrying out second inflation by adopting a protective gas device, and discharging the residual sample to be extracted in the first drainage tube and the second drainage tube.
The above sampling method is described in detail with reference to fig. 2.
Referring to FIG. 2, the first inflation is performed using the shielding gas device 110 such that the first draft tube M1 and the second draft tube M2 are filled with the shielding gas.
Specifically, the first valve F11 and the seventh valve F17 are closed, the second valve F12, the third valve F13 and the fourth valve F14 are opened, and the shielding gas device 110 is used for first inflation, so that the first draft tube M1 and the second draft tube M2 are filled with shielding gas.
Referring to FIG. 2, after the first aeration is performed, the sample to be extracted is introduced from the first port A, and the sample to be extracted is caused to flow along the first and second drains M1 and M2.
In one embodiment, the first port a is connected to a storage device in which the sample to be extracted is stored.
Specifically, after the first inflation, the second valve F12 and the third valve F13 are closed, and the first port a is connected to the storage device; after the first port A is connected with the storage device, the air extraction device 120 is opened; then, the first valve F11 and the third valve F13 are opened to allow the sample to be extracted to flow along the inner walls of the first drain tube M1 and the second drain tube M2.
In another embodiment, the first port a is connected to a device for producing a sample to be extracted. In this case, the sample to be extracted also flows along the inner walls of the first and second draft tubes M1 and M2 by the fluidity of the sample itself to be extracted in the production process without the action of the suction device 120.
In particular, after the first aeration has been carried out, the second valve F12 and the third valve F13 are closed, connecting the first port a to the device for producing the sample to be extracted; after the first port A is connected to the apparatus for producing a sample to be extracted, the first valve F11 and the third valve F13 are opened to allow the sample to be extracted to flow along the inner walls of the first draft tube M1 and the second draft tube M2.
While the sample to be extracted flows along the first and second drains M1 and M2, the first valve F11 is adjusted according to the monitoring of the first monitoring device 130 to control the flow rate of the sample to be extracted along the inner walls of the first and second drains M1 and M2.
Referring to FIG. 2, the sample to be extracted flowing out of the second drain tube M2 is collected at the fourth port using the collection device 100.
Specifically, after the sample to be extracted flows between the intermediate port and the second port B, the seventh valve F17 is opened, and the collection device 100 collects the sample to be extracted flowing out of the second drain tube M2 at the fourth port.
Referring to FIG. 2, after the sample to be extracted is collected, the second aeration is performed using the shielding gas means 110 to discharge the remaining sample to be extracted from the first and second drains M1 and M2.
When the first port A is connected with the storage device, the residual sample to be extracted in the first draft tube M1 and the second draft tube M2 is discharged into the storage device under the action of the second inflation.
When the first port A is connected to the apparatus for producing a sample to be extracted, the remaining sample to be extracted in the first and second drains M1 and M2 is discharged to the apparatus for producing a sample to be extracted by the second aeration.
According to the sampling method provided by the invention, before the sample to be extracted is introduced into the first port, the protective gas device is adopted for carrying out first inflation, so that the first drainage tube and the second drainage tube are filled with the protective gas, and the sample to be extracted introduced from the first port is prevented from contacting with air. The reaction of the sample to be extracted introduced from the first port and the moisture in the air is avoided to generate byproducts, and the byproducts are prevented from remaining in the pipe walls of the first drainage pipe and the second drainage pipe. After the samples to be extracted are collected, the protective gas device is adopted for second inflation, so that the residual samples to be extracted in the first drainage tube and the second drainage tube are discharged, and more residual samples to be extracted in the first drainage tube and the second drainage tube are avoided. So that the sampling device is easy to clean after the sample to be extracted is collected.
Fig. 4 is a schematic structural diagram of a sampling device according to another embodiment of the present invention.
The sampling device comprises: a first draft tube M3, the first draft tube M3 having a first port C and a second port D, and an intermediate port between the first port C and the second port D, an additional port between the second port D and the intermediate port; the first port C is suitable for leading in a sample to be extracted; a second draft tube M4, the second draft tube M4 having a third port and a fourth port, the third port in communication with the intermediate port; the collecting device 200, the collecting device 200 is connected with the fourth port; a third draft tube M5, one port of the third draft tube M5 communicating with the first draft tube M3 through an additional port, the other port of the third draft tube M5 communicating with the fourth port; the shielding gas device 210 is connected with the second port D, and the shielding gas device 210 is suitable for introducing shielding gas into the second port D.
The material of the sample to be extracted refers to the previous embodiment and is not described in detail.
The positional relationship of the second drain tube M4 with the first drain tube M3 refers to the positional relationship of the second drain tube M2 with the first drain tube M1 in the foregoing embodiment, and will not be described in detail.
The function and specific device selection of the shielding gas device 210 refer to the previous embodiment. The materials of the protective gas refer to the previous embodiment.
The sampling device further comprises: a gas extraction device 220, wherein the gas extraction device 220 is connected with the second port D.
The function and specific device selection of the air extractor 220 refer to the previous embodiments and will not be described in detail.
Since the sampling device includes the third draft tube M5, on the one hand, the third draft tube M5 can slow down the flow speed of the sample to be extracted in the first draft tube M3 and the second draft tube M4, so that the sampling process is easily controlled. On the other hand, when the first drain tube M3 between the intermediate port and the additional port is damaged, sampling may be performed using the first drain tube M3, the second drain tube M4, the third drain tube M5 between the first port C to the intermediate port, and the first drain tube M3 between the additional port and the second port D.
The number of the third draft tubes M5 is one or more. In the present embodiment, the number of the third draft tubes M5 is taken as an example. In other embodiments, when the number of the third draft tubes is plural, the plural third draft tubes are connected in parallel.
The first port C may be connected to a storage device in which the sample to be extracted is stored, wherein the suction device 220 is operated to reduce the air pressure in the first drain tube M3 so that the sample to be extracted flows along the first drain tube M3 from the first port C to the second port D. Meanwhile, when the liquid level of the sample to be extracted reaches the middle port, the sample to be extracted flows through the second drain tube M4 to reach the fourth port. The sample to be extracted also flows through the third draft tube M5.
The first port C may also be connected to a device for producing a sample to be extracted. At this time, the sample to be extracted also flows along the inner walls of the first draft tube M3, the second draft tube M4 and the third draft tube M5 without the action of the air sucking device 220 due to the fluidity of the sample to be extracted itself in the production process.
The sampling device further comprises: a first valve F21 is disposed between the second port D and the suction device 220. Opening the first valve F21 and the gas-withdrawal device 220 communicating with the second port D; the first valve F21 is closed and the suction device 220 is blocked from the second port D.
The sampling device further comprises: and a second valve F22 disposed between the second port D and the shielding gas device 210. Opening the second valve F22 and communicating the shielding gas device 210 with the second port D; the second valve F22 is closed and the shielding gas device 210 is blocked from the second port D.
The sampling device further comprises: a third valve F23 disposed between the intermediate port and the first port C; a fourth valve F24 is disposed between the second port D and the additional port.
In this embodiment, the sampling device further includes: a fifth valve F25 disposed between the additional port and the intermediate port; and the sixth valve F26 is arranged between two ports of the third drainage tube M5.
The functions of the fifth valve F25 and the sixth valve F26 are as follows: (1) controlling the flow rate of the sample to be extracted in the first draft tube M3 by adjusting the fifth valve F25; controlling the flow rate of the sample to be extracted in the third draft tube M5 by adjusting the sixth valve F26; (2) after the sampling is finished, the fifth valve F25 and the sixth valve F26 can be closed by crossing so that the sample to be extracted remaining in the first drain tube M3, the second drain tube M4 and the third drain tube M5 can be discharged.
The sampling device further comprises: a first monitoring device 230, the first monitoring device 230 being connected to the first drain tube M3, the first monitoring device 230 being located between the second port D and the intermediate port, said first monitoring device 230 being adapted to monitor the position of the sample to be extracted in the first drain tube M3 during sampling.
The first monitoring device 230 is a first liquid level meter or a first pressure gauge.
The sampling device further comprises: a second monitoring device (not shown) connected to the third draft tube M5, the second monitoring device being disposed between the two ports of the third draft tube M5, the second monitoring device being adapted to monitor the position of the sample to be extracted in the third draft tube M5 during sampling.
The second monitoring device is a second liquid level meter or a second pressure meter.
The function and device selection of the collecting device 200 refer to the previous embodiments.
The sampling device further comprises: and a seventh valve F27 disposed between the fourth port and the collection device 200. The seventh valve F27 is adapted to control how much of the sample to be extracted is collected in the collection device 200.
Correspondingly, the present invention further provides a method for sampling by using the above sampling device, and with reference to fig. 5, the method includes:
s11: performing first inflation by using a protective gas device to fill protective gas in the first drainage tube, the second drainage tube and the third drainage tube;
s12: after the first inflation, introducing a sample to be extracted from the first port, and enabling the sample to be extracted to flow along the first drainage tube, the second drainage tube and the third drainage tube;
s13: collecting the sample to be extracted flowing out of the second drainage tube at the fourth port by using a collecting device;
s14: and after the sample to be extracted is collected, carrying out second inflation by using a protective gas device, so that the residual sample to be extracted in the first drainage tube, the second drainage tube and the third drainage tube is discharged.
The above sampling method is explained in detail with reference to fig. 4.
Referring to FIG. 4, the first inflation is performed using the shielding gas device 210 such that the first draft tube M3, the second draft tube M4 and the third draft tube M5 are filled with the shielding gas.
Specifically, the first valve F21 and the seventh valve F27 are closed, the second valve F22, the third valve F23, the fourth valve F24, the fifth valve F25 and the sixth valve F26 are opened, the shielding gas device 210 is used for first inflation, and the first draft tube M3, the second draft tube M4 and the third draft tube M5 are filled with shielding gas.
Referring to FIG. 4, after the first aeration is performed, the sample to be extracted is introduced from the first port C, and the sample to be extracted is caused to flow along the first draft tube M3, the second draft tube M4 and the third draft tube M5.
In one embodiment, the first port C is connected to a storage device in which the sample to be extracted is stored.
Specifically, after the first inflation, the second valve F22 and the third valve F23 are closed, and the first port C is connected to the storage device; after the first port C is connected to the storage device, the air extraction device 220 is opened; then, the first valve F21 and the third valve F23 are opened to allow the sample to be extracted to flow along the inner walls of the first drain tube M3, the second drain tube M4, and the third drain tube M5.
In another embodiment, the first port C is connected to a device for producing a sample to be extracted. In this case, the sample to be extracted also flows along the inner walls of the first, second and third draft tubes M3, M4 and M5 by the fluidity of the sample itself to be extracted during the production process without the action of the suction device 220.
In particular, after the first aeration has been carried out, the second valve F22 and the third valve F23 are closed, connecting the first port C to the device for producing the sample to be extracted; after the first port C is connected to the apparatus for producing a sample to be extracted, the first valve F21 and the third valve F23 are then opened to allow the sample to be extracted to flow along the inner walls of the first draft tube M3, the second draft tube M4 and the third draft tube M5.
While the sample to be extracted flows along the first draft tube M1, the second draft tube M2 and the third draft tube M5, the first valve F21 is adjusted according to the monitoring condition of the first monitoring device 230, and the speed of the sample to be extracted flowing along the inner walls of the first draft tube M3, the second draft tube M4 and the third draft tube M5 is controlled.
While the sample to be extracted flows along the first draft tube M1, the second draft tube M2 and the third draft tube M5, the first valve F21 can be adjusted according to the monitoring condition of the second monitoring device, and the speed of the sample to be extracted flowing along the inner walls of the first draft tube M3, the second draft tube M4 and the third draft tube M5 is controlled.
Referring to FIG. 4, the sample to be extracted flowing out of the second drain tube M4 is collected at the fourth port using the collection device 200.
Specifically, after the sample to be extracted flows into the first draft tube M1, the second draft tube M2 and the third draft tube M5, the seventh valve F27 is opened, and the collecting device 200 collects the sample to be extracted flowing out of the second draft tube M4 at the fourth port.
Referring to fig. 4, after the sample to be extracted is collected, the second aeration is performed using the shielding gas device 210 to discharge the sample to be extracted remaining in the first draft tube M3, the second draft tube M4 and the third draft tube M5.
When the first port C is connected to the storage device, the remaining sample to be extracted in the first, second and third drains M3, M4 and M5 is discharged to the storage device by the second inflation.
When the first port C is connected to the apparatus for producing a sample to be extracted, the remaining sample to be extracted in the first drain tube M3, the second drain tube M4 and the third drain tube M5 is discharged to the apparatus for producing a sample to be extracted by the second aeration.
Specifically, during the second inflation, the following may be performed: closing the fifth valve F25, the first valve F21 and the seventh valve F27, and opening the second valve F22, the fourth valve F24, the sixth valve F26 and the third valve F23 to discharge the residual sample to be extracted in the second drainage tube M4 and the third drainage tube M5; the first valve F21, the sixth valve F26 and the seventh valve F27 are closed, and the second valve F22, the fourth valve F24, the fifth valve F25 and the third valve F23 are opened, so that the residual sample to be extracted in the first drainage tube M3 is discharged.
According to the sampling method provided by the invention, before the sample to be extracted is introduced into the first port, the protective gas device is adopted for carrying out first inflation, so that the first drainage tube, the second drainage tube and the third drainage tube are filled with the protective gas, and the sample to be extracted introduced from the first port is prevented from contacting with air. The reaction of the sample to be extracted introduced from the first port and the moisture in the air is avoided to generate byproducts, and the byproducts are prevented from remaining in the tube walls of the first drainage tube, the second drainage tube and the third drainage tube. After the samples to be extracted are collected, the protective gas device is used for second inflation, so that residual samples to be extracted in the first drainage tube, the second drainage tube and the third drainage tube are discharged, and more residual samples to be extracted in the first drainage tube, the second drainage tube and the third drainage tube are avoided. So that the sampling device is easy to clean after the sample to be extracted is collected.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (19)
1. A sampling device, comprising:
the first drainage tube is provided with a first port, a second port and an intermediate port positioned between the first port and the second port, and the first port is suitable for introducing a sample to be extracted;
a second draft tube having a third port and a fourth port, the third port being in communication with the intermediate port;
the collecting device is connected with the fourth port;
the protective gas device is connected with the second port and is suitable for introducing protective gas into the second port;
before a sample to be extracted is introduced into the first port, the protective gas device is adopted for first inflation, so that the first drainage tube and the second drainage tube are filled with protective gas; and after the sample to be extracted is collected, carrying out second inflation by adopting the protective gas device, so that the residual sample to be extracted in the first drainage tube and the second drainage tube is discharged.
2. The sampling device of claim 1, wherein the shielding gas is argon, nitrogen, oxygen, carbon dioxide, krypton, or radon.
3. The sampling device of claim 1, further comprising: and the air exhaust device is connected with the second port.
4. The sampling device of claim 3, wherein the suction device is a suction pump, a suction canister, or a negative pressure drainage bulb.
5. The sampling device of claim 3, further comprising: the first valve is arranged between the second port and the air exhaust device.
6. The sampling device of claim 1, further comprising: the first monitoring device is connected with the first drainage tube and located between the second port and the middle port, and the first monitoring device is suitable for monitoring the position of a sample to be extracted in the first drainage tube in the sampling process.
7. A sampling device according to claim 6 wherein the first monitoring means is a first liquid level gauge or a first pressure gauge.
8. A sampling device according to claim 1 wherein the second draft tube is disposed vertically with respect to the first draft tube.
9. The sampling device of claim 1, wherein the collection device is a vacuum tank, a sealed tank containing an inert gas, or an open tank containing an inert gas having a density greater than air.
10. The sampling device of claim 1, further comprising: and the second valve is arranged between the second port and the protective gas device.
11. The sampling device of claim 1, further comprising: a third valve disposed between the intermediate port and the first port; and the fourth valve is arranged between the second port and the middle port.
12. The sampling device of claim 1, wherein the first draft tube further has an additional port located between the second port and the intermediate port;
the sampling device further comprises: and one port of the third drainage tube is communicated with the first drainage tube through an additional port, and the other port of the third drainage tube is communicated with the fourth port.
13. The sampling device of claim 12, further comprising: a fifth valve disposed between the additional port and the intermediate port; and the sixth valve is arranged between two ports of the third drainage tube.
14. The sampling device of claim 12, wherein the number of the third draft tubes is one or more.
15. The sampling device of claim 12, further comprising: and the second monitoring device is connected with the third drainage tube, is positioned between two ports of the third drainage tube, and is suitable for monitoring the position of the sample to be extracted in the third drainage tube in the sampling process.
16. A sampling device according to claim 15 wherein the second monitoring means is a second liquid level gauge or a second pressure gauge.
17. The sampling device of claim 1, further comprising: and the seventh valve is arranged between the fourth port and the collecting device.
18. The sampling device of claim 1, wherein the material of the sample to be extracted is titanium tetrachloride, concentrated sulfuric acid, or sulfur trioxide.
19. A sampling method using the sampling device provided in any one of claims 1 to 18, comprising:
carrying out first inflation by adopting a protective gas device to fill protective gas in the first drainage tube and the second drainage tube;
after the first inflation, introducing a sample to be extracted from the first port, and enabling the sample to be extracted to flow along the first drainage tube and the second drainage tube;
collecting the sample to be extracted flowing out of the second drainage tube at the fourth port by using a collecting device;
and after the sample to be extracted is collected, carrying out second inflation by adopting a protective gas device, and discharging the residual sample to be extracted in the first drainage tube and the second drainage tube.
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Denomination of invention: Sampling device and sampling method Effective date of registration: 20231228 Granted publication date: 20191220 Pledgee: China Co. truction Bank Corp Yuyao branch Pledgor: NINGBO CHUANGRUN NEW MATERIALS Co.,Ltd. Registration number: Y2023980073914 |